serf system是什么意思？

• monitor
• PAXLOVID怎么读
• crayon
• 队长的英文
• explore
• disappointed
• peeping
• ticket
• general
• juice
• pear
• modernize
• neck
• fake
• various
• firmness
• scared
• 局外人英文
• candy
• 造型的英文
• intermission
• failure
• sweater
• tomato
• volume
• lesson
• dragon
• client
• toxicity
• ultra

• droplets
• profile
• tourist
• conflict
• committing
• 长颈鹿英语怎么说
• 解决方案英文
• prompt
• giraffe
• 领域英语
• begins
• brat
• vehicle
• cloud
• panicked
• searches
• giraffe
• maths
• reveal
• general
• aspect
• 来源英语
• lake
• 流浪者英文
• emergency
• 呼吁英语
• silver
• narrow
• rice
• cheese

• take root
• take shape
• take the plunge
• take as
• take by surprise
• take to task
• talk back
• talk down to
• talk out of
• talk sense
• tear at
• tear away
• tear into
• tear up
• tell apart
• tell off
• the hell
• the moment that
• the more the more
• the rank and file
• the same as
• there and then
• think back to
• think better of
• think over